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    <script>
        var arr = [123, 203, 23, 13, 34, 65, 65, 45, 89, 13, 1];
        function fn(a, b) {
            return a - b;
        }
        console.log(arr.sort(fn));

        // 冒泡排序
        for (var i = 0; i < arr.length - 1; i++) {
            for (var j = 0; j < arr.length - 1 - i; j++) {
                if (arr[j] > arr[j + 1]) {
                    var temp = arr[j + 1]
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
        }
        console.log(arr);
    </script>
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